Cloud computing refers to delivering computing services over the internet. It allows users to access resources like storage, processing power, and software applications on-demand without needing local infrastructure. Key characteristics include on-demand self-service, broad network access, resource pooling, rapid elasticity, and measured service. Cloud deployment models consist of public, private, and hybrid clouds which offer different levels of control, customization, and cost effectiveness. Common uses of cloud computing include data storage, software development, web applications, and disaster recovery.

1. Introduction to
Cloud Computing
Fundamentals of Cloud Computing

2. Introduction
What is cloud computing?
Cloud computing refers to the delivery of computing
services over the internet, including storage, processing
power, and software applications.
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It allows users to access resources and services
on-demand, without the need for physical
infrastructure or local servers.

3. Characteristics of Cloud Computing
Key Characteristics of Cloud Computing
• On-Demand Self-Service: Users can provision resources and
services as needed, without requiring human interaction with
service providers.
• Broad Network Access: Services are accessible over the
internet via standard protocols and devices.
• Resource Pooling: Computing resources are pooled together to
serve multiple users, allowing for efficient utilization and
scalability.
• Rapid Elasticity: Resources can be scaled up or down quickly
to meet changing demands.
• Measured Service: Cloud service usage is measured,
monitored, and billed based on actual consumption.
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4. Cloud Deployment Models
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5. Cloud Deployment Models
Public Cloud
• Services are provided over a
public network and available to
anyone who wants to use them.
• It is a cost-effective option for
businesses and individuals looking
for scalability and flexibility.
• Public cloud providers, such as
AWS, Azure, and GCP, offer a
wide range of services accessible
to the general public.
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6. Cloud Deployment Models
Private Cloud
• Infrastructure is dedicated to a
single organization and may be
located on-premises or off-
premises.
• Private cloud environments are
designed to meet specific security,
compliance, or performance
requirements.
• They offer enhanced control,
customization, and privacy but
require significant upfront
investment.
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7. Cloud Deployment Models
Hybrid Cloud
• Combines public and private cloud
environments, allowing for
flexibility and data sharing
between the two.
• Organizations can leverage the
benefits of both public and private
clouds, ensuring optimal resource
allocation.
• Hybrid cloud deployments enable
workload portability and seamless
integration between different
environments.
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8. Cloud Deployment Models
Community Cloud
• Community cloud is a deployment
model where infrastructure and
services are shared among a specific
community or group of organizations.
• It caters to the needs of a particular
community, such as government
agencies, educational institutions, or
research organizations.
• Community cloud provides a cost-
effective solution while addressing
specific requirements and compliance
standards of the community.
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9. Service Models
Infrastructure as a Service (IaaS)
IaaS provides virtualized computing
resources over the internet. Users have
control over the operating systems,
storage, and networking components.
They can provision and manage virtual
machines (VMs), storage, and networks
according to their requirements.
Examples of IaaS providers include AWS
EC2, Azure Virtual Machines, and
Google Compute Engine.

10. Service Models
Platform as a Service (PaaS)
PaaS offers a platform for developing,
testing, and deploying applications.
Users can focus on application
development without worrying about
infrastructure management.
PaaS providers manage the underlying
infrastructure, including servers, storage,
and networking.
Developers can leverage pre-configured
environments, development frameworks,
and deployment tools.
Examples of PaaS providers include
Heroku, Google App Engine, and AWS
Elastic Beanstalk.
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11. Service Models
Software as a Service (SaaS)
SaaS delivers software applications over
the internet on a subscription basis.
Users can access and use applications
directly through a web browser or APIs.
The provider hosts and manages the
underlying infrastructure, application,
and data.
Users can typically customize certain
aspects of the application to fit their
needs.
Examples of SaaS include Salesforce,
Microsoft Office 365, and Google
Workspace.
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12. Benefits of Cloud
• Cost Savings: Pay for what you use, with no upfront infrastructure costs.
• Scalability: Easily scale resources up or down based on demand.
• Flexibility: Access resources and applications from anywhere with an
internet connection.
• Reliability: Cloud providers typically offer high uptime and data
redundancy.
• Collaboration: Enable seamless collaboration and data sharing among
teams.
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13. Common Cloud Computing Use Cases
• Data Storage and Backup: Store and back up large amounts of data
securely.
• Software Development and Testing: Rapidly create and deploy
applications in a scalable environment.
• Web and Mobile Applications: Host web and mobile applications in the
cloud for global accessibility.
• Big Data Analytics: Process and analyze vast amounts of data using
cloud resources.
• Disaster Recovery: Maintain data backups and recovery plans in the
cloud for business continuity.
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14. Cloud Architecture
• Cloud architecture refers to the design and structure of cloud computing
environments, including the arrangement of components and the
relationships between them.
• It involves various elements that work together to deliver cloud services
and ensure reliability, scalability, and security.
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15. Cloud Architecture
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NIST Architecture of Cloud

16. Cont…
• Cloud Consumer: An individual or organization that engages in a business
partnership with Cloud Providers and utilizes their services.
• Cloud Provider: A person, organization, or entity that is accountable for offering
services to individuals or entities who are interested in them.
• Cloud Auditor: A party capable of conducting an impartial evaluation of cloud
services, as well as assessing the performance, security, and operations of the
cloud implementation.
• Cloud Broker: An entity responsible for managing the utilization, performance, and
delivery of cloud services. Additionally, they act as mediators between Cloud
Providers and Cloud Consumers, negotiating relationships between the two
parties.
• Cloud Carrier: An intermediary that facilitates the connectivity and transportation
of cloud services from Cloud Providers to Cloud Consumers.

17. Cloud Architecture Best Practices
• Up-front Planning: Prioritize up-front planning to understand capacity needs and avoid
unexpected production glitches. Continuously test performance during the architecture
design phase.
• Security First: Implement robust security measures to protect against unauthorized
access. Safeguard all layers of the cloud infrastructure through data encryption, patch
management, and strict security policies. Consider adopting zero-trust security models
for enhanced protection in hybrid and multi-cloud environments.
• Disaster Recovery Readiness: Automate recovery processes to minimize costly
downtime and ensure swift recovery from service disruptions. Implement monitoring
mechanisms to track capacity and utilize redundant networks for a highly available
architecture.
• Maximize Performance: Optimize computing resources by continuously monitoring
business demands and technological requirements. Efficiently manage and allocate
resources to maintain optimal performance levels.
• Cost Optimization: Leverage automated processes, managed service providers, and
utilization tracking to reduce unnecessary cloud computing expenses. Regularly review
and optimize resource allocation to ensure cost-effectiveness.
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18. Conclusion
• Cloud computing enables the delivery of computing services over the internet,
eliminating the need for local infrastructure.
• Key characteristics of cloud computing include on-demand self-service, broad network
access, resource pooling, rapid elasticity, and measured service.
• Deployment models include public, private, and hybrid clouds, offering flexibility and
data sharing options.
• Service models such as IaaS, PaaS, and SaaS provide virtualized computing
resources, platform for application development, and software delivery respectively.
• Cloud computing offers benefits like cost savings, scalability, flexibility, reliability, and
enhanced collaboration.
• Cloud computing presents a transformative approach to computing, offering cost-
effective solutions, scalability, and flexibility for organizations across various
industries. By leveraging the benefits of cloud computing and aligning with the
appropriate deployment and service models, organizations can drive innovation,
improve efficiency, and adapt to evolving business needs.
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19. Remember
• Understand your specific needs and requirements when selecting a cloud
deployment and service model.
• Prioritize security measures such as data encryption and access controls to protect
against unauthorized access.
• Plan for disaster recovery and high availability to ensure business continuity.
• Continuously monitor and optimize resource utilization for optimal performance and
cost savings.
• Regularly assess and adapt your cloud architecture to evolving business needs and
emerging technologies.
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20. THANK YOU